The constituents of the essential oil of Orobanche alba Stephan growing wild in Iran using GC-FID and GC-MS were identified. Forty components were identified, constituting approximately 96.09% of the oil. The oil was rich in Geranyl acetate (26.0%), Palmitic acid (12.5%), Geranial (11.8%) and Neral (10.2%). The results obtained showed that the essential oil of O. alba Stephan consists of twelve oxygenated monoterpene compounds (62.1%).
Keywords: Orobanche alba Stephan, essential oil, geranyl acetate, palmitic acid, geranial, neral.